Advances in Powder Metallurgy of Light Alloys

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Powder Metallurgy".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1016

Special Issue Editor


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Guest Editor
Département de Génie Chimique et de Génie Biotechnologique, Université de Sherbrooke, 2500 Boulevard de l’Université, Sherbrooke, QC J1K 2R1, Canada
Interests: powder metallurgy; tribology; additive manufacturing

Special Issue Information

Dear Colleagues,

To address the needs of the market in different areas, such as the aerospace and car manufacturing industries, it is very important and essential to be able to develop and also process various lightweight alloys and materials (e.g., Al alloys, Ti alloys, etc.). In this regard, powder metallurgy processes play a special role. The fabrication of powders using different metallurgical techniques is an area of considerable interest. Another area of interest is utilizing powder metallurgy, which could be considered a green technology, to manufacture the needed parts. These processes (e.g., press and sintering, cold isostatic pressing, hot isostatic pressing, etc.) have some advantages as compared to conventional techniques, making them attractive in the current market circumstances. The potential to make net-shape parts, reducing material loss, is one of these major advantages. The aim of this Special Issue is to advance our knowledge of the wide range of powder metallurgy routes and processes that could lead to the production of lightweight powders as well as engineering parts. The research studies for publication in this Special Issue can target different aspects of the topic, such as powder production, material development, part production, their processing routes, obtained microstructural characteristics, and chemical and mechanical properties.

Dr. Khashayar Khanlari
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • lightweight alloys
  • powder metallurgy
  • processing
  • microstructure
  • properties

Published Papers (1 paper)

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Research

18 pages, 6522 KiB  
Article
Cytotoxicity, Corrosion Resistance, and Wettability of Titanium and Ti-TiB2 Composite Fabricated by Powder Metallurgy for Dental Implants
by Ali Mohammad Ali Aljafery, Abdalbseet A. Fatalla and Julfikar Haider
Metals 2024, 14(5), 538; https://doi.org/10.3390/met14050538 - 1 May 2024
Viewed by 690
Abstract
Objectives: Orthopedics and dentistry have widely utilized titanium alloys as biomaterials for dental implants, but limited research has been conducted on the fabrication of ceramic particle-reinforced Ti composites for further weight reductions. The current study compared titanium–titanium diboride metal composites (Ti-TiB2 [...] Read more.
Objectives: Orthopedics and dentistry have widely utilized titanium alloys as biomaterials for dental implants, but limited research has been conducted on the fabrication of ceramic particle-reinforced Ti composites for further weight reductions. The current study compared titanium–titanium diboride metal composites (Ti-TiB2) with pure titanium (processed by powder metallurgy) in terms of toxicity, corrosion resistance, and wettability. Methods: First, cell lines of a primary dermal fibroblast normal human adult (HDFa) were used to test the cytocompatibility (in vitro) of the composite and pure Ti using an indirect contact approach. Corrosion testing was performed for the materials using electrochemical techniques such as potentiodynamic polarization in a simulated bodily fluid (SBF) in conjunction with a three-electrode electrochemical cell. The entire set of experimental tests was conducted according to the ASTM F746-04 protocol. The contact angles were measured during wettability testing in accordance with ASTM D7334-08. An X-ray diffractometer (XRD) was used to catalog every phase that was visible in the microstructure. A scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) were used to determine the chemical composition. Results: The cytotoxicity tests revealed that there was no detectable level of toxicity, and there was no significant difference in the impact of either of the two materials on the viability of human fibroblasts. An increase in the corrosion resistance of the composite (0.036 ± 0.0001 mpy (millimeters per year)) demonstrated the development of a passive oxide coating. According to the findings, the composites showed a greater degree of hydrophilicity (contact angle 44.29° ± 0.28) than did the pure titanium (56.31° ± 0.47). Conclusions/Significance: The Ti-TiB2 composite showed no toxicity and better corrosion resistance and wettability than did pure Ti. The composite could be a suitable alternative to Ti for applications involving dental implants. Full article
(This article belongs to the Special Issue Advances in Powder Metallurgy of Light Alloys)
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